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      Peso e indicadores de calidad interna del huevo de cuatro razas de gallinas reproductoras venezolanas Translated title: Weight and egg`s internal quality indicators of four breeds of Venezuelan breeding hens

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          Abstract

          Para comparar el peso y calidad interna del huevo de las razas de gallinas reproductoras venezolanas GDB, IPA, Maracay y FAGRO (UCV), se condujo un ensayo en el Laboratorio - Sección de Aves (FAGRO-UCV). Se suministró una ración entre 80 g y 110 g de alimento/ave. El programa sanitario incluyó la vacunación contra las enfermedades de Newcastle y Bronquitis Infecciosa. Se registraron 8.689 pesos de huevos y se usaron 3.142 huevos para calidad interna, incluyendo la medición de las alturas de yema y albumen con un vernier de trípode; asimismo, con estos datos, se calcularon las unidades Haugh. Se realizó análisis de varianza considerando un diseño completamente aleatorizado, incluyendo el efecto de la raza y semana de edad de la gallina en el modelo. Para analizar la calidad interna del huevo según la edad de la gallina, solo se consideró este último efecto. Se estimó la regresión lineal del peso del huevo sobre la semana de edad de la gallina. Se realizaron pruebas de “t” de Student con un nivel de signifi cación de 0,05. Hubo diferencias (P<0,05) del peso del huevo entre razas a favor de las gallinas FAGRO-UCV (56,4 g), sin variaciones para la calidad interna. El peso del huevo aumentó 0,23 g sobre el promedio por cada semana de edad de la gallina. Se concluye que la raza FAGRO-UCV presenta ventajas comparativas sobre las otras en cuanto al peso del huevo y que la edad afecta (P<0,05) el peso de este, siendo más pesados los huevos de gallinas de mayor edad.

          Translated abstract

          In order to compare weigh and internal quality of egg of four Venezuelan breeding hens, it conducted an experiment in the Laboratorio - Sección de Aves (FAGRO-UCV). It provided a ration between 80 g and 110 g of food/bird (depending on age). Health program included immunization against Newcastle and Infectious Bronchitis diseases. Were recorded 8.689 egg weights and 3.142 eggs were used for internal quality; calculating the Haugh units. Variance analyses were performed considering a design completely randomized, including breed and age of hen in week effect in the model. To analyze internal quality of the egg according to the age of the hen, only was considered this last effect. Lineal regression of egg weight over week of age of the hen was estimated. Were realized “t” Student test with a signifi cance level of 0.05. There were differences (P<0.05) of egg weight between breeds. FAGRO-UCV was higher (56.4 g), without differences for internal quality. Egg weight increased 0.23 g over average for each week of age of the hen. It concluded that FAGRO-UCV breed show comparatives advantages over other breeds about the egg weight and older hen eggs are heavier.

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          Effects of short storage conditions and broiler breeder age on hatchability, hatching time, and chick weights.

          An experiment was conducted to assess how hatching performance is affected by breeder age and egg holding environment during short-term storage. Response variables analyzed were egg weight loss up to 18 d of incubation, viability (hatchability of fertile eggs), embryonic mortality, hatching time, and weight of male and female chicks, at hatching and at the end of incubation. The trials involved a total of 2,250 hatching eggs from each of two commercial broiler breeder flocks of the same strain (Avian) but of different ages (32 to 34 and 48 to 50 wk). Eggs were stored for 0, 1, or 2 d in the egg storage room or in the setter room. The hatching times of the chicks were recorded at 4-h intervals during the period from 478 to 494 h postincubation, and at 514 h, when incubation was terminated and all chicks were removed from the hatcher. In eggs from younger hens, viability was not influenced by preincubation storage; in older hens, viability of eggs not submitted to storage was higher (P < 0.05) by 3 to 6 percentage points than that of stored eggs. Hatching times were not affected by age of the hen, whereas male chicks tended to hatch, on average, about 3 h later than females. Chick weights at hatching and at removal from the hatcher were similar for both sexes, but females experienced a higher (P < 0.05) weight loss in that interval. Eggs incubated on the day of lay tended to hatch, on average, later than stored eggs (especially when compared to eggs submitted to 1 d storage), and produced heavier chicks.
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            Comparison of physical quality and composition of eggs from historic strains of single comb White Leghorn chickens

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              Principles and Procedures of Statistics: A Biometrical Approach.

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                Author and article information

                Journal
                zt
                Zootecnia Tropical
                Zootecnia Trop.
                Instituto Nacional de Investigaciones Agricolas INIA, Maracay, Venezuela. (Maracay, Aragua, Venezuela )
                0798-7269
                September 2014
                : 32
                : 3
                : 207-216
                Article
                S0798-72692014000300002 S0798-7269(14)03200302
                7a9b302c-52c7-4032-bdc3-a701aeb85240

                http://creativecommons.org/licenses/by/4.0/

                History
                : 31 March 2014
                : 25 June 2014
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 29, Pages: 10
                Product

                SciELO Venezuela

                Self URI: Texto completo solamente en formato PDF (ES)
                Categories
                Artículos Científicos

                gallinas Criollas,Haugh units,albumen,folk,Creole hens,unidades Haugh,yema

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